package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.google.gson.JsonObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.Employee;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.EmployeeMapper;
import com.sky.mapper.UserMapper;
import com.sky.properties.JwtProperties;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.impl.client.HttpClients;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
@Slf4j
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements UserService {
    @Resource
    private UserMapper userMapper;
    @Resource
    private WeChatProperties weChatProperties;
    public static final String WX_LOGIN ="https://api.weixin.qq.com/sns/jscode2session";

    @Override
    public User wxLogin(UserLoginDTO userLoginDTO) {
        // 向微信发出请求
        String openid = getOpenid(userLoginDTO.getCode());
        // 判断openid是否为空，如果为空表示登录失败,掏出业务异常
        if(openid==null){
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }
        // 判断用户是否存在
        QueryWrapper<User>queryWrapper=new QueryWrapper<>();
        queryWrapper.eq("openid",openid);
        User user=userMapper.selectOne(queryWrapper);
        // 如果用户不存在
        if(user==null){
            user=User.builder()
                    .openid(openid)
                    .createTime(LocalDateTime.now())
                    .build();
            log.info("准备插入用户{}",user);
            save(user);
        }
        log.info("获得用户成功{}",user);
        return user;
    }

    private String getOpenid(String code) {
        Map<String,String> map=new HashMap<>();
        map.put("appid",weChatProperties.getAppid());
        map.put("secret",weChatProperties.getSecret());
        map.put("js_code", code);
        String json= HttpClientUtil.doGet(WX_LOGIN,map);
        JSONObject jsonObject= JSON.parseObject(json);
        String result=jsonObject.getString("openid");
        log.info("获得openid{}",result);
        return result;
    }
}
